Go to current user's directory
If you are logged as "root", your user directory would be "/root", but you can just type "~" instead.
Go up a level
Go up a level and then into a directory found at that level
- [directory] -- A directory found above your current directory.
Go to absolute root directory
Not to be confused with the "root" user's directory.
If you are using a web hosting provided that has limited your user privileges, you not be able to access the "absolute root" directory, but rather the upper most directory available to you.
Return to the previous directory